{
  "node-name": "node-f",
  "read-only": true,
  "driver": "raw",
  "file": "node-s"
}
{
  "driver": "vvfat",
  "dir": "/var/somefiles",
  "floppy": true,
  "rw": false,
  "node-name": "node-s",
  "auto-read-only": true,
  "discard": "unmap"
}